Water-heater.



N0. 650,083; I 'Pafnted May 22, I900.

T. PATTISON & C. AQ BARLOW.

WATER HEATER. I ("0 Mode.) (Applicatiqn filed apt. 26, 1899-.)

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7 UNITED v STATES PATENT OF E.

. THOMAS PATTISON AND CHARLES AVERILL HARLOW, OF SAN LUIS OBISPO,CALIFORNIA.

WATER-HEATER.

' SPECIFICATION forming part of Letters Patent No. 650,083, dated May22, 1900.

Application filed September 25, 1899. Serial No. '73 1,671. (No model.)

To all whom it may concern:

Be it known that we, THOMAS PATTIsONand CHARLES AVERILL BARLOW, citizensof the United States,.residing at San Luis Obispo, in the county of SanLuis Obispo and State of California,have invented certain new and usefulImprovements in Water-Heaters; and we do hereby declare the following tobe a full, clear, and exact description of the invention, such as willenable others skilled in the art to which it appertains to make and usethe same.

Our invention relates to that class of waterheaters commonly calledstovepipe waterheaters; and it consists primarily, of thepeculiarconstruction, combination, and general arrangement of the various parts,as will be hereinafter fully described, and particularly pointed out inthe claims.

The primary object of the invention is to produce a simple andcheaply-constructed heater having a maximum amount of heating-surface,so that its heating capacity will be greater than the average of thisclass of heaters.

Another object of the invention is to so construct the heater that thecollection of soot will be rendered practically impossible and the draftof the stove to which the'device is attached perfectly free andunobstructed.

These and other objects of .the invention will become apparent upon thefull disclosure thereof and are attained by means of the deviceillustrated in the accompanying drawing, in which the figure shownrepresents a vertical sectional view of the heater attached to thepipe-collar of a stove or range and conneeted withan ordinarystand-boiler.

Referring to the figure, the numeral 1 indicates the pipe-collar of anordinary stove or range, 2 the stand-boiler, and 3 the heater.

The heater is composed of a spirally-passaged water-heating cylinder 4,having its lower end adapted to fit the collar 1 of the stove and itsupper end adapted to fit the Stovepipe. The inner wall of thewater-heating cylinder is perfectly smooth, being free from allcrevices, angles, or projections that are calculated to catch and holdthe particles of soot and obstruct the draft of the stove. The spiralpassage is oblong in cross-section,

and the water fiows therethrough in a ribbonlike stream, by reason ofwhich it is quickly heated.

We prefer to construct the heater of two cylinders, an inner and anouter one,properly united at their ends, with a narrow space between thetwo. The narrow space is formed into a spiral passage by means of thespiral partition. As thus constructed the heater may be attacheddirectly to the collar of the stove, as shown in the drawing, or it maybe placed intermediate of the stovepipe-sections.

Free circulation of the water between the heater and stand-boiler isobtained by means of the pipes 5 and 6. The water flowing from theboiler through pipe 5 enters the spirallypassaged heating-cylinder atits lowest point and traveling through the entire length of the passagereturns to the boiler in a highlyheated condition through the pipe 6.The boiler is provided with a draw-01f cook or faucet 7 and with adraw-off pipe 8, the latter being provided with a valve 9 for emptyingthe boiler when desired. Instead of feeding water from. the boiler tothe heater through pipe 5 it may be taken through the draw-01f pipe 8.This is accomplished by connecting the pipe 5 with the draw-off pipe 8instead of having it enter the boiler direct, as shown in the drawing.

This construction of heater will be found to be exceedingly eflicient inoperation, and being inexpensive of construction it is easily within thereach of all persons who are compelled to employ this method of heatingwa ter and who cannot afford the more expensive and elaboratewater-heating systems. It is neat and attractive in appearance andcompact in form and does not interfere with the ordinary use of thestove.

The upper end of the inner cylinder of the heater forms a collar 10, anda pipe shelf or plate 11, upon which articles of food may be placed tokeep warm, is fitted upon said 001- lar and retained in position bymeans of a flange 12, turned on the section of the stovepipe above theheater.

In this class of water-heaters it is necessary to utilize all of theheat possible in order to maintain the water in the heating-section atthe desired or required temperature, and the preventing any perceptibleloss of heat by ra diation, which would occur in case there wereascending currents of cool air comingin'contact with the water-heatingsection. Asthe communicating pipe 6 is situated directly un der theplate 11, it-wi-ll be seen that no perceptible loss of heat will occurin the water in its passage boiler.

Having thus ,fully described our invention,

tionbetween said cylinders, by which a spiral 1 passage is formed, saidattachment being providedfwith suitable inlet and outlet openings. 2; Inawater-heater, the combination: with a. boiler, of a water-heatingattachment com- 1 Witnesses:

prising an inner cylinder, theendsofi which are:adapted to fitthestove-collar.or'sections of Stovepipe, an outer cylinder spaced fromtheinner cylinder, and a spiral partition between said cylinders, bywhich a spiral passage is for-med. said attachment being DI'O-videdjwith suitable inlet and outlet openings.

3. In a water-heater, the combination with a'boiler, of aspirally-passagedcylinder con- :structed to cause the water to flowtherethrough in a ribbon-like form, connections between said boiler andcylinder, and a shelf or. plate situated at. the upper end of thecylinder to checker retard the upward flow of air. through said pipe tothe stand 4. Inawater-heater, the combination with the stove collar andpipe of a stove, ofaspirally-passaged cylinder forming asectiorr of theStovepipe,andstand-boilerconnectedwvitl1 the cylinderby suitablef'e'edandreturn pipes,

, an da shelf'or plate situated b'e'tweenisaid cylinder andthe lowerstovepipe-section,.wherevbythe ascending air is checked or retarded.

In testimony whereof we afl ix our signatures in the presence of twowitnesses.

THOMAS; PATTISON.

CHARLES AVERILL BARLOW.

JosEPH GREEN, J ESSE JONES.

